Kejriwal and his merry band of newly elected MLAs will go to the venue by train, the party said.
Arvind Kejriwal said: "I will go by train. All of those taking oath will go by train."
Kejriwal also tweeted saying: "Many people asking me for passes for tomo's oath ceremony. No passes needed. All are welcome. Its ur prog. My family will also sit in public."
AAP member Raghav Chadda in a TV studio said they are against bungalows and red battis (red beacon lights) and ostentation.
He said the simple people's function would be a giant leap for the national politics though it may be a small step for them, drawing from the famous quote of Neil Armstrong when he landed on moon.
While at 45 Kejriwal will be the youngest chief minister of Delhi, his other ministers' list included the names of Manish Sisodia, Somnath Bharti, Satyendra Kumar Jain, Rakhi Birla, Saurabh Bhardwaj and Girish Soni.
Fifteen days after the Delhi assembly election results were declared, the AAP on Monday last said it will form the government with the support of the Congress party in the national capital.
The just-over-a-year-old party led by Kejriwal emerged as the second biggest outfit with 28 seats, falling only a few seats short of the right wing BJP and allies who managed 32 seats.
The BJP is four short of a majority in the 70-member Delhi assembly. Congress managed only 8 seats.
--IBNS (Posted on 27-12-2013)